Earlier this year, the founders turned down a $30 million offer for the company from US billionaire Mark Cuban on Shark Tank, the American version of the hit TV show Dragons Den. It was the biggest ever offer in the show’s history.

The app is already available in the US, Hong Kong, Sydney and Toronto.

The company runs a so-called “freemium” model like Candy Crush, where the app is free to download but users can pay for extra features.